It is not confirmed whether he is alive or dead.
He is possibly the father of the nephew Penny mentions having (and bought a comic book from Stuart for him).
When Penny was talking to her mother about her engagement to Leonard in "The Status Quo Combustion", it was implied that her sister was pregnant when she got married which is later confirmed in "The Bachelor Party Corrosion" where Penny mentions that her water broke at the wedding reception after she and Wyatt started their father-daughter wedding dance.
- Wife: Lisa
- Father-in-law: Wyatt
- Mother-in-law: Susan
- Sister-in-law: Penny
- Brother-in-laws: Randall, Leonard Hofstadter
- Possible Son/Nephew: Unnamed
- Uncle-in-law: Unnamed
- Cousin-in-law: Unnamed
- Paternal Grandfather-in-law: Unnamed
- Paternal Grandmother-in-law: Unnamed
- Maternal Grandmother-in-law: Unnamed
- Maternal Grandfather-in-law: Unnamed